The use of membrane filtration in conjunction with coagulation processes for improved NOM removal

✍ Scribed by James C. Vickers; Mark A. Thompson; Uday G. Kelkar

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 380 KB
• Volume: 102
• Category: Article
• ISSN: 0011-9164
• DOI: 10.1016/0011-9164(95)00041-y

✦ Synopsis

Changes in regulatory requirements and the forthcoming Disinfectant/Disinfection By-Products (D/DBP) Rule will require that drinking water treatment facilities be operated to achieve maximum removals of particles and disinfectant tolerant microorganisms as well as natural organic matter (NOM). For the conventional water treatment plant, this may require balancing coagulation requirements for maximum particle and turbidity removal efficiency, as required by the Surface Water Treatment Rule (SWTR) [11 and Enhanced Surface Water Treatment Rule (ESWTR), with the enhanced coagulation requirements as required by the D/DBP Rule. For drinking water production, the use of membrane filtration processes such as microfiltration and ultrafiltration (MF/UF) to satisfy the turbidity, particle and microorganism removal requirements of the SWTR is well established [2,31. Without pretrearmcnt, MF/UF treatment processes can achieve only nominal (~10 percent) removal of disinfection by-products (DBP) precursors [4]. However, these processes can be used in combination with conventional coagulation chemistry [5] or Powdered Activated Carbon (PAC) [6] to achieve similar removals of NOM. The role of MF/UF as a treatment technique will evolve as more information is developed on how to apply the processes to meet current and future water quality objectives.